Negate a Boolean in Python

You are given a boolean in python and you have to negate it without writing tons of lines of code.

Negation of a Boolean in Python

Some of the methods to negate a boolean in python are mentioned below:

Use not operator:

var = True

print(var)

Output:

True

var2=not var
print(var2)

Output:

False

Use operator.not_() function:

You can call operator.not_() function from the operator library of python. It will return a bool which is the negation of the value passed as a parameter in the function.

import operator
var = True
print(operator.not_(var))

Output:

False

To use a function that requires a predicate-function such as map, filter – You can use this.

Example:

import operator
var = [True, False, True, False]
x=map(operator.not_, var)
print(list(x))

Output:

[False, True, False, True]